620513226 has 24 divisors (see below), whose sum is σ = 1423531044. Its totient is φ = 194670720.

The previous prime is 620513221. The next prime is 620513249. The reversal of 620513226 is 622315026.

620513226 is a `hidden beast` number, since 620 + 5 + 1 + 32 + 2 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 552203001 + 68310225 = 23499^2 + 8265^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 620513226.

It is not an unprimeable number, because it can be changed into a prime (620513221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1013605 + ... + 1014216.

Almost surely, 2^620513226 is an apocalyptic number.

620513226 is an abundant number, since it is smaller than the sum of its proper divisors (803017818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620513226 is a wasteful number, since it uses less digits than its factorization.

620513226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027846 (or 2027843 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 620513226 is about 24910.1028901930. The cubic root of 620513226 is about 852.9371177292.

The spelling of 620513226 in words is "six hundred twenty million, five hundred thirteen thousand, two hundred twenty-six".